Improvement in punching-machines



WFEEIAM H. VAN CLEVE.

lmproveme-ntin Punching Machines.

Patented Oct. 10, 18:71.

ATENT OFFICE.

WILLIAM H. VAN'GLEVE, OF YPSILANTI, MICHIGAN.

IMPROVEMENT IN PUNCHING-MACHINE S.

Specification forming part of Letters Patent No. 119,900, dated October10, 1871.

To all whom it may concern:

Be it known that I, WILLIAM H. VAN CLEV'E, of Ypsilanti, in the countyof \Vashtenaw and State of Michigan, have invented a new and use fulImprovement in an Ejector for Punchin g-Dies and I do declare that thefollowing is a true and accurate description thereof, reference beinghad to the accompanying drawing and to the letters of reference markedthereon and being a part of this specification, in which- Figure l is aperspective view of a washerpunch in the act of perforating out awasherblank; and Fig. 2 is a crosssection on the line as m in Fig. 1,showing the punch in the act of withdrawal and the ejector-spring nearlyready to eject the finished washer.

Like letters indicate like parts in each figure.

This invention has for its object to provide punching-presses with asimple spring which will throw to one side the punched article as it isdetached from the punch by the stripper; and it consists in providing asimple spring attached to the die-plate, and operating as more fullyhereinafter set forth.

In the drawing, A represents a machine-punch, operated in the usualmanner; and B, the die. 0 is the gauge-plate resting on the die tocenter the washer-blank. D is the stripper, through which the punchplays, and is secured to the gauge-plate, as shown, or to any convenientpart of the press, to strip the perforated washer from the punch in theusual manner.

All the foregoing parts are old and well known, and I disclaim theinvention of any part thereof.

To get the completed article out of the way as soon as detached from thepunch by the stripper has heretofore caused much trouble, and toovercome the difficulty is the object of my invention, which Ieffectually accomplish in the followin g manner: To the die I secure thelower end of a leaf-spring, E, passing up on the inner side of a recessformed in one side of the gauge-plate, its free end projecting upthrough a slot, a, in the stripping-plate. The base of the spring shouldbe set far enough to one side to not interfere with the proper placingof the blank on the die, while its upper end is inclined toward, but notinterfering with the punch. As the punch rises after perforating theblank it carries the latter with it until the stripping-plate isreached, when, in the further rising of the punch, it is detach edtherefrom, when the pressure of the spring, exerted against its side,shoots the finished article out from under the stripper with a forceproportionate to the tension of the spring. It is not necessary that thespring should project up through the stripping-plate, or that the slot cbe made in the latter, as that side of the plate can be entirely cutaway without detriment. Although shown attached to a washer-press, itwill readily be seen that my invention is equally applicable to otherpunches for pimohin g or stamping blank-die work of every description.

What I claim as my invention, and desire to secure by Letters Patent,is-

The combination of the bed-plate 'O, punch A, stripper D, and spring B,substantially as and for the purpose specified.

WILLIAM H. VAN OLEVE.

